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Seals 
Guiding Elements and Wear Strips
Parker’s selection of guiding elements and wear strips includes U-cup, press-in-place extremely wear-resistant rod, seal, and wiper and guidance systems for pneumatic cylinders; rod guide rings for hydraulic-cylinder and comparable lubricated applications; and countless other offerings.
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Cushioning Seals
0 out of 5(0)In pneumatic cylinders, cushioning seals are part of a design that provides for controlled final position retardation. Up on approaching the final position, a tapered sleeve, firmly located on the piston rod, progressively closes off the open passage toward the line connection of the cylinder. In this phase of motion, the defluent medium is led via a, usually adjustable, needle valve, the adjustment of which controls the degree of stroke movement retardation. During reverse operation, the cushioning seal designs provide a non-return valve functionality and ensure free flow. Parker offers robust seal profiles, suitable for the harshest operating conditions and showing extreme wear and high-temperature resistance.
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Custom Seals
0 out of 5(0)Parker has the skills and experience to offer custom seals that are completely unique and designed exclusively for a specific application profile. Parker’s application engineers are on hand to ensure you get the best solution for your application needs, whether those be functional requirements, gland limitations, installation improvements, etc. Our advanced material know-how and design expertise is at your fingertips whenever you require a bespoke sealing solution.
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Back-up Rings
0 out of 5(0)Back-up rings are the most common anti-extrusion devices employed in dynamic and static sealing, designed to prevent the migration of sealing material into the extrusion gap under the system pressure. Parker offers a wide range of back-up ring geometries and materials to suit every seal type and application. They are open or closed shapes for snap assembly made of a broad range of compounds which are highly resistant to thermal or mechanical stress. Parker back-up rings help reduce costly downtime and ensure long-term functional reliability.
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Buffer Seals
0 out of 5(0)Buffer seals are primary seals in tandem sealing configurations. Designed to withstand pressure peaks from the system, Parker hydraulic buffer seals employ an unsymmetrical cross-section design and are often combined with anti-extrusion rings to prevent gap extrusion. State-of-the-art designs include a pressure-relief functionality from the low pressure side, addressing concerns related to drag-oil pressure trapped between the tandem elements. Our comprehensive selection of premium buffer seals are designed for use with hydraulic cylinders, providing excellent wear resistance, and high pressure capabilities. Parker buffer seals combine advanced polymer materials, such as PTFE or TPU with sophisticated product design.
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